Looks like the Rosetta and the data it gathers could change our view of comets, away from that of comets being made of ice. Maybe some of the data they find will push us away from the gravity theory more to the electric theory. That is if people are open to ideas outside existing dogma with all its quandaries.https://www.youtube.com/watch?v=PYzEy4GlcQI
The electric universe is alternative theory to that of gravity based astrophysics, in which electricity takes its right full domain at the head of the table. It explains the jets of plasma in galactic photos as well as the shapes of galaxies, it takes into account the cosmic magnetic fields and doesn’t need a whopping 70% unexplained dark matter.
Anyway something to think about.

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